HIGHLEAD GK500 Series Instruction Manual

HIGH LEAD
GKSOO SERIES
Purchasing Dept
Copy
High-speed Stretch Sewing Machine
Instruction Manual
Parts Catalog
SHANGHAI HUIGONG N0.3 SEWING MACHINE FACTORY
From the library of: Diamond Needle CorpFrom the library of: Diamond Needle Corp

From the library of: Diamond Needle CorpFrom the library of: Diamond Needle Corp

-INTRODUCTION-
Thank you very much for purchasing 500 Series machine.
This instruction manual describes daily routine maintenance and safety precautions to keep the machine
in the best possible conditions.
Please study this manual very carefully before operating the machine.
CHUTION
OBSERVE THESE SAFETY PRECAUTIONS
Though Pegasus takes the utmost care to produce safe sewing machines and devices, operators
should follow these basic safety rules.
8 To prevent accidents, do not remove safety devices or parts while operating the machine.
8 Do not leave tools or other unnecessary objects on the machine table while operating the ma-
chine.
8 Before maintenance, adjusting, cleaning, threading or replacing the needle, and to prevent acci-
dents, be sure the
power is turned off, Check that the machine will not operate when the pedal is
pressed.
NOTE
In case a crutch type motor is used, it will keep on rotating by inertia after turning off power supply
CD. If the machine pedal @ is stepped on inadvertently, it is dangerous because the machine will move
unexpectedly. Keep on stepping on the machine pedal @ until the machine comes to a stop after turning
off power supply CD.
'
\
e Turn the power off before leaving the machine table.
e In the event of a power failure, be sure to turn the machine off.
e Check that the machine is securely grounded.
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From the library of: Diamond Needle CorpFrom the library of: Diamond Needle Corp

CONTENTS
Ill BEFORE OPERATING
1. Lubrication ...........•........................................................ 1
2. Manual lubrication ........................................................•...•.. 2
3. Filling the HR device with silicon oil .......•..........•...•..............••.......... 3
4. Threading .•.•...•.......•........•.•............•....•.............•........... 4
5. Threading diagram (2-needle, 3-needle, 4-needle) ................•.......•........... 5
Ill TEST SEWING
1. Adjusting the presser foot pressure ..............................................•..•• 6
2.
Adjusting the diff. feed ratio ...............................................•....... 7
3. Adjusting the stitch length ........•..............................•................ 8
4. Adjusting the thread tension ..........................................•........ 0 o •• 9
Ill MAINTENANCE DURING USE
1. Cleaning the machine ................................................. 0 • 0 ••••••• 10
2. Replacing the needle ................................................ , ......•.... 11
3. Checking the oiI circulation ............................................. 0 ••••••••• 12
4. Checking and replacing the oil filter ..................................•.... 0 ••••• 0 •• 13
5. Replacing the oil ................................................•.............. 14
6.
Adjusting Di1nensions ............................................................ 15
Ill PARTS CATALOG
•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 0 •• 16-24
Ill GAUGE PARTS LIST
........................... ·, ....................................... 25-28
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From the library of: Diamond Needle CorpFrom the library of: Diamond Needle Corp

• BEFORE OPERATING Lubrication
After filling the oil pan, the oil surface should lie between (H) and (L) lines.
Add oil when the oil surface reaches or goes below (L).
Note : Use recommended oil (HIGH SPEED SEWING MACHINE OIL) (ISO VG22)
-1-
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II BEFORE OPERATING Manual lubrication
Apply 2 or 3 drops of oil by hand when the machine is used for the first time or has been left unused for
some time.
HIGH SPEED SEWING MACHINE OIL
-2-
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Ill BEFORE OPERATING
Filling the HR device with silicon oil
Fill the HR device with oil before it is too low in order to prevent needle thread breakage a>~d fab-
ric damage.
Note : Use LAKE recommended silicon oil. (UNION CORPORATION) UCCL-45 (350)
-3-
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Ill BEFORE OPERATING
G) Open the eye guard and three covers.
~
Needle thread
Tirm the knots off neatly
before passing through
the eye of the needle to
tethread.
Tirm the knots off neatly
after passing through the
eye of the looper.
Threading
The looper thread take-up comes out.
Knot the preset thread and the
thread being used together to
thread the machine.
Be sure
to thread the machine
correctly by referring to the
threading diagran. (See
P5)
-4-
Replace the looper thread
take-up after threading.
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II BEFORE OPERATING
Threading diagram ( 2-needle, 3-needle, 4-needle)
-----CD--
Broken lines @ for more
stretchable thread.
For less
stretehable
thread
If the top cover thread is too
loose, use broken line@.
If the top cover thread is still
too loose after thread with
broken
line@ , use broken
line@.
Ifthe top cover thread is too
tight, use broken line @ .
'
~
----@-'---' --1
!
I
Broken lines ®
For more stretchable thread
5
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Iii TEST SEWING
Adjusting the presser foot pressure
Loosen adjusting nut CD and tum adjusting screw ® to adjust the presser foot pressure. It should be as
light as possible, yet be sufficient to obtain the proper stitch formation.
Light
-6-
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• TEST SEWING Adjusting the diff. feed ratio
Loosen nut CD and move the lever up ® and down to obtain the correct differential feed ratio, then
tighten nut
CD.
To shrink
~7~
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8 TEST SEWING
Adjusting the stitch length
While pressing the push button, tum the hand wheel to seek the position at which the push button goes
further into the depth.
Then keeping the push button pressed, tum the hand wheel and set the desired scale to the aligning mark.
Note : Stitch length adjustment must only be made after the differential feed ratio has been changed.
Coarse
i
'-----------------------/
Handweel
-8-
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1111 TEST SEWING
Adjusting the thread tension
Make tension adjustments with the needle thread knob CD, top cover thread knob ® and the lower
looper knob @.
'•
~~l
'## ~ To tighten
To loosen
-9-
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8 MAINTENANCE DURING USE
Cleaning the machine
Mainly the slots of the needle plate and the feed rows should be cleaned.
-10-
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• MAINTENANCE DURING USE
Replacing the needle
Check the needle carefully to see that the start is turned to the rear of the machine.
Insert the needle to the proper depth, and fasten securely.
OK! NO! OK! NO!
0
._ Scarf
++
Standard needle
NEEDLE SIZE
~
2-needle 3-needle
Organ UY128GAS
#9
Schmetz UY128GAS
- 11-
#10
Note: Do not remove the screw.
Be sure to use the allen
key wrench packged rn
the accessory box "
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• MAINTENANCE DURING USE
Checking the oil circulation
0 OK!
~
Operating
u
-12-
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• MAINTENANCE DURING USE
Checking and replacing the oil filter
Check and replace the oil filter every six months.
Note : On machines fit with a UT Device, remove the solenoid bracket.
0
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II MAINTENANCE DURING USE
Replacing the oil
Replace the oil one month after the first use and every six months thereafter.
See P.l
-14-
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